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gpu: nvgpu: add __must_check to gk20a_busy

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The return value of gk20a_busy must be checked since it may not succeed
in some cases. Add the __must_check attribute that generates a compiler
warning for code that does not read the return value and fix all uses of
the function to take error cases into account.

Bug 200040921

Change-Id: Ibc2b119985fa230324c88026fe94fc5f1894fe4f
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/542552
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Konsta Holtta
2014-09-26 16:05:41 +03:00
committed by Dan Willemsen
parent 79ab01debd
commit 2d0bcfa331
7 changed files with 58 additions and 17 deletions
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6
drivers/gpu/nvgpu/gk20a/as_gk20a.c
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@@ -82,8 +82,12 @@ int gk20a_as_release_share(struct gk20a_as_share *as_share)
if (atomic_dec_return(&as_share->ref_cnt) > 0)
return 0;
gk20a_busy(g->dev);
err = gk20a_busy(g->dev);
if (err)
return err;
err = gk20a_vm_release_share(as_share);
gk20a_idle(g->dev);
release_as_share_id(as_share->as, as_share->id);